The film stars Gösta Ekman, Monica Zetterlund, Hans Alfredson, Lars Ekborg and Birgitta Andersson.

[1] A group of friends are to celebrate the summer on a small island in the Stockholm Archipelago.

The plan is to eat crayfish and drink snaps, a quintessentially Swedish tradition.

Some are already in the house on the island (with the food) and the rest of the group arrives by boat (bringing the snaps), but they experience great difficulties while trying to come ashore.

Their only neighbor on the island, an eccentric, Hollywood-obsessed, hot-tempered hermit doesn't make the situation better.